Ventilating apparatus.



c. E. vSHADALL. VENTILATING APPARATUS.

APPLICATION flu-:n luLv 5.1912. 191941, Patented Feb. 13, 1917.

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C. E. SHADALL.

VENTILATING APPARATUS.

APPLICATION FILED IuIY s. 1912.

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C. E. SHADALL.

VENTILATING APPARATUS.

APPLICATION FILED JuLY 5.1912.

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CHARLES E. SHADALL, 0F MILWAUKEE, VJISCONSIN, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO SHADALL MANUFACTURING COMPANY, GE WAUWATOSA, WIS- CONSIN, A CORPORATION 401:1" WISCONSIN.

VENTILATNG APPARATUS.

speeiacation of Letters Parent.

Patented llt-eb.. i3, with.

application inea July 5, i912. serial no. 707.657.

To all whom t may concern:

Be it known that I, CHARLES E. SI-IADALL, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and tate of `llV'isconsin, have invented certain new and useful Improvements in Ventilating Apparatus, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.

This invention relates more particularly to Ventilating apparatus of theclass shown and described in United States Letters Patent No. 1,004,917, issued to me Qctober 3, 1911, for removing from water closet fixtures such as bowls and urinals, foul air and odors, and preventing the same from escaping into the rooms in which such lixtures are located.

lts main objects are to automaticallyshift the spreader or deflector of the aspirator into working position by the pressure, weight or buoyant effect of the water admitted to the aspirator for producing a current of air therein; to malte the spreader self-centering with respect to the jet orifice in which it works; to admit of locating the aspirator at any distance from the fixture with which it is connected or in an inaccessible place; and generally to improve the construction and operation of apparatus of this class. l

lt consists in the construction, arrangement and combination of parts as hereinafter particularly described and pointed out in the claims.

ln the accompanying drawing like characters designate the same parts in the several figures.

Figure 1 is a view partly in side elevation and partly in vertical section of Ventilating apparatus embodying the invention as applied to a water closet; Fig. 2 is a similar view showing a modification; Fig. 3 is a similar view of another modification; and

Fig. t is a vertical section of still another modification of the aspirator.

Referring to Fig. 1, a designates an ordinary closet bowl having the usual trapped discharge passage 7) in the lower part thereof and an annular flushing channel o surrounding the upper part of the bowl and opening on the under side into the same.4 ln elevated flushing tank d is connected with the relation to the channel c in the bowl by a pipe e, in the usual manner.

rlhe bowl is providedwith a hinged seat f, which is normally held partially open or elevated by a spring or springs g.

A water supply pipe la, leads intothe tank al.

An aspirator casing e' is formed or provided with a mixing and air entraining tube or passage j opening at the ends into inlet and outlet compartments. An air inlet or suction pipe 7c connects theinlet compartment of the casing with the bowl. ln the present instance it is shown as connected indirectly with the channel c inthe bowl through the lower portion of the flushing pipe e. An air outlet or escape pipe Z` connects with the outlet compartment of the casing in communication with the opposite end of the mixing tube or passage() and leads outside ofthe building in which the fixture is located, or into a Ventilating fiue with which the building may be provided.

A water chamber m located in the upper part of the aspirator casing, has a jet orifice and an internal valve seat surrounding said opening. V

A float basin or receptacle p is mounted on the chamber m and communicates therewith through the opening o. rlChe basin or receptacle y) is provided with a float Q, connected by a depending stein r with an upwardly closing valve s, which fits the seat around the opening o. rl`he valve s is normally supported in its open position by the iioat Q' resting upon an upwardly projecting rim of the chamber m around the opening o, and is guided and held in the chamber m by wings or other means7 in proper jet orifice n and to the valve seat and opening o.

A spreader t, pivotally connected by a ball and soclret or other universal oint, with the valve s, extends downwardly therefrom through the jet orifice n and is formed or provided at its lower end with an enlarged conical head which by reason of its loose `universal `oint connection with the valve chamber m, and the head of the spreader is thereby shifted upwardly into working position Ain said orifice, the action of the water passing through the orifice operating to hold the spreader centrally therein so as to produce a symmetrical hollow conical jet, the most effective for entraining the maximum VolumeV of air with a minimum amount'of water.

The float basin or receptacle and the float are inclosed by a casing or housing u, which opens at therbottom around the chamber m into the upper part of the aspirator casing, so that any overflow ofV water from said basin orgreceptacle will be discharged into the aspirator kcasing and conducted therefrom through the drain pipe o leading from the lower part thereof, and in the present case, into the bowl a between the seat f and the top of the bowl. This pipe o serves, as shown, in connection with the pipes e and c, -for removing foul air and odors as well as for-the discharge of water from the aspirator, and if made of sufficient size7 it may serve alone for the air inlet to the aspirator, and the pipe 7c may be dispensed with.

lIn orderto maintain an air draft through the pipe c and to avoid weakening the draft through the lpipe c when the two pipes are used, as shown, or when the pipe v is used `alone as'the common air inlet and water discharge connection, a water seal is pro- 'vided in the lower part of the aspirator wardly from the adjacent side of the mix ing tubeV or passage y', the bottom of the casing wbeing preferably inclined downward toward the opening into the pipe o as shown, and the upwardly projecting wall fw forming a .pocket or trap intowhich the downwardly extending wall 00 projects. rThe wall w is .preferably formed next to the inclined bottom `of the casing with a restricted drain opening y, which allows the water to gradually escape from the seal or pocket into `the pipe u when the supply to the aspirator is cut ofi', and thus prevent freezing in cold weather. These walls fw and a being spaced apart, as shown, while proiding 'for an effective water seal which prevents the air from escaping through the outletv pipeZ without lirst passing through the mixing tube or passage j, permits the Y free discharge of water from the lower part of the casing into the pipe o when the aspirator is in operation. A pipe e connects the chamber m with the pipe h or other convenient source of water supply. This pipe is provided adjacent to the closet bowl or other fixture, with a starting valve 2, for `controlling the supply of water to the aspirator. An easily operated self-closing valve of the kind shown in the drawing, is preferably used for this purpose.

The valve case is formed with two chambers, an inlet chamber and an outlet chamber connected by a port normally closed by a valve disk 3 held to its seat by a spring el. The stem 5 of the valve, which opens against the water pressure, projects into the .outlet chamber in position to be engaged by anylealrage of water aroundV said rod may be discharged. The rod 7 may be provided adjacent to the bowl a or other fixture, with a head or handle l0 operated by hand, or it may be connected by a lever 1l with a thrust rod l2, engaging an arm 13 on the seat f, so that the valve will be automatically opened when the seat is depressed.

The aspirator and the valve controlling the supply of water thereto, are shown as located behind the wall of' the room in which the bowl or other fixture to be ventilated is placed, so `as to be out of the way and hidden from view. They may be located at any distance from the fixture above or below it, as for example, in an attic or cellar, the pipe connections being extended and arranged accordingly.

As shown by F ig. l, the fioat casing or housing a, is provided with a removable cover and is .removably mounted with the chamber m on the upper open end of the aspirator casing z' so as to provide easy access to internal parts of the apparatus for inspection and repairs. The casing of the controlling valve 2 is also provided with removable heads or covers to afford access to internal parts and to provide for assembling the same.

ln the operation of the apparatus, when the fixture is in use, the valve 2 is opened either by hand or automatically by the dcpression 'oi the seat f, thereby admitting water through the pipe z into the chamber m. The jet orifice n around the stem of the spreader t' being of smaller area than the bore of the supply pipe e, the water immediately ills the chamber m, overiowing through the opening 0 into the float basin or receptacle p and lifting the float g, which in turn lifts and closes the valve s and at compartment of the casing z' and forces it out of the lower compartment of the casing into the escape pipe Z. Foul air, with any offensive odors, is drawn from the bowl a through the pipes e and 7c, into the aspirator and prev-ented from escaping into the rooml in which the bowl is located.

The water discharged through the jet orifice n andv passing through the mixing tube or passage y' into the lower part of the aspirator casing, rst fills the pocket formed by the wall fw with the inclined bottom of the casing and forms a seal with the depending wall a'. it then overows the upper edge of the wall fw and escapes through the pipe o into the bowl. Air is also drawn from the upper part of the bowl through the pipe o, and passing upwardly in the casing i along one side of the mixing tube or passage j, is forced by the water jet with air enter ing the aspirator from pipe 7s, through said mixing tube or passage and discharged through the pipe Z.

When the seat f or handle 10 is released, the valve 3 is closed by the spring 4i, thereby shutting ofi' the supply of water from the chamber m. The float g then descends, permitting the valve s to open by gravity and permitting the spreader 25 to move downward into the position in which it is shown by the drawing, thereby increasing the area of the jet opening n, permitting an increased 'How of the water remaining in said chamber through said opening. The spreader and the opposing walls of the jet opening are thus thoroughly flushed, and any sediment or dirt adhering thereto is removed, so that the apparatus is kept in working order without care or attention so `far as the production of a water jet is concerned.

When the iow of water from the chamber m ceases, the water confined by the wall fw gradually escapes through the `opening y into the pipe o, so that injury to the'aspi'- rator by the freezing of water therein, is avoided.

Referring to Fig. 2, showing a modiiication of the apparatus, the lower part of the aspirator casing i is connected with the bowl a, which is formed with an extra or special opening for the purpose, by a pipe la which serves both as a suction and air inlet and as a water outlet for the aspirator, taking the place of the pipes 7c and o of Fig. 1.

The aspirator casing is formed or provided at the top with an extension `or chamber u which extends into the same above and in line with the mixing tube or passage j.

An expansible water chamber in takes the place of the chamber m of Fig. 1. The chamber fm. is formed of annularly corrugated flexible sheet metal or the like, so that it is expansible and contractible axially. lt is attached at its upper end to the top or removable cover of the extension or chamber u, and in its lower movable head is formed with the jet orifice n. The spreader t is pivotally connected at its upper end with the stationary top or cover of the extension or chamber u', and the water supply pipe e is connected centrally with said cover in communication with the interior of the expansible chamber m. The transverse hole through the upper end of the spreader stem through which the pivot pin passes, is enlarged from the center toward the ends, as shown in Fig. 4, so that the conical head at `the lower end of the spreader is capable of lateral movement in all directions and thus becomes self-centering with respect to the orifice n.

ln the operation of the device, when the controlling valve 2 is opened and water admitted to the expansible chamber m', said chamber is filled and subjected to pressure owing to the restricted area of the jet orifice n.. As a consequence, the lower head of the chamber is moved downward against the bottom of the extension or chamber u', which serves as a stop therefor, and the jet orifice n is brought into working position relative to the conical head of the spreader. Vhen the valve 2 is closed and the water supply cut off from the aspirator, the chamber fm. being relieved of internal pressure, contracts by reason of the resiliency of its corrugated or fluted wall, and moves the jet orifice n upward into its normal position, away from the head of the spreader, thereby permitting an increased iiow of water, which iushes the opposing walls of the orifice and spreader, dislodging and removing any dirt or obstruction which might otherwise accumulate and interfere with the operation of the apparatus.

In other respects the construction and operation of the apparatus as shown in Fig. 2, is substantially the same as of the apparatus shown in Fig. 1.

Referring to Fig. 3, showing a further modification of the apparatus, the aspirator chamberV t is formed with upper and lower compartments which have no communication with each other except through the mixing tube or passage j. The upper compartment is provided with a water chamber m, which may be formed as shown, with the detachable cover of the casing. In the lower head or bottom of this chamber,'which is made removable, the jet orifice a is formed in axial alineinent with the tube or passage j. The spreader t is connected at its upper end by a ball and socket or universal joint with a piston g fitted in the upper part of said chamber above the connection of the water supply pipe .e therewith. An air vent opening 14, connects the upper end of the chamber with the upper compartment of the aspirator casing. The piston Q is provided with a stop 15 for limiting its downward movement. The water discharge pipe e" leading from the .bottom of thelower com- .partment of the aspirator casing in this case discharges into the flushingv tank d instead of intov the closet bowl, as in the forms of apparatus shown in the two preceding figures.

In thel operation of the apparatus shown by Fig. 3, when the valve 2 is opened and water is' admitted to the chamber m, the pistonV g is lifted, carrying the head of the spreader t upward into working position relative to the jet orifice n. When the valve 2 is closed and water is cut 0E from the aspirator, the piston gwith the spreader t descends by gravity to its original position, in which it isv arrested by the stop 15. In other respects the construction and operation of this form of the apparatus are substantially like thoseV of the forms shown in Figs. 1 and 2.

Referring to Fig. 4, showing a further modification of the aspirator, the casing 73 is substantially `like that shown in Fig. l, except that in place of the fioat, float basin or receptacle and housing, it is extended farther upward and provided with a removable cover, and inside above the mixing tube or passage j, with a water chamber m".

The top ,or upper head of this chamber,

n which is removable, is formed with an openingo', and on the under side with a seat for the normally open and upwardly closing valve s. The spreader t, which passes through the jet orifice a in the bottom wall or head of said chamberin axial alinement with the tube or passage y', is pivotally connected at its upper end with. the valve s, which inturn has an upwardly projecting stem passin through the opening 0 and connected with a disk g, which normally rests on the upper head Vor cover of the chamber m" over said opening. The valve s and the moving parts connectedr therewith are held in place with relation to the orifice n and opening o by guides 16 on the cover.

When water is admitted to this form of the aspirator, after filling the chamber m", it kpasses upwardly through the opening o', lifting the disk g and with it the valve s and spreader z?. The valve being closed, stops the flow of water through the opening o and is held against its seat by the internal pressure inv chamber m" as long as water is admitted thereto. When the supply of water to the aspirator is cut 0H, the valve s with the disk g and the spreader t descends by gravity to its original position, as shown by the drawing. In other respects the-construction and operation` of this form of the aspirator are substantially the same as those of the forms shown in the other figures.

Various changes in the details of con-V struction and arrangement' of parts other than those herein specifically shown and .described may be made, without materially affecting the principle and mode of operation of the apparatus and without departure from the spirit and scope of the invention.

I claim:

l. In Ventilating apparatus the colnbination of a water chamber having a jet orifice in the lower part and an opening and valve seat in the upper part, a fioat receptacle above and communicating with said chamber through said opening, an upwardly closing valve fitted to said seat, a fioat in said receptacle connected with said valve, a spreader connected with said valve and extending axially downward therefrom into said jet orifice, and a valve controlled water supply connection with said chamber.

2. In Ventilating apparatus the combination of a water chamber having a jet orifice in thev lower part and an opening and valve seat in the upper part thereof, a fioat receptacle located above said chamber and communicating therewith through said opening, a normally open and upwardly closing valve fitting said seat, a float in said receptacle connected through said opening with the valve, a spreader pivotally connected with said Valve and extending downwardly therefrom into the jet orifice in which it is self-centering, and a valve controlled water supply connection with said chamber.

3. In Ventilating apparatus the combination of an aspirator casing having a mixing tube or passage, air inlet and outlet connections communicating with opposite ends of said tube or passage and a separate water discharge connection below said air connections, a water chamber having a jet orifice in alinement with the mixing tube and a spreader, one of which is movable axially relativev to the other into working position of restricted flow by water admitted to said chamber and returns automatically to its normal positionof unrestricted flow, and a valve controlled water supply connection with said chamber.

4:. In Ventilating apparatus the combination of an aspirator casing having an air entraining passage, air inlet and outlet connections communicating with opposite ends of said passage, and a separate water discharge connection below said air connections; a water chamber having a jet orifice in alinement with said air entraining passage and a self-centering spreader one of which is axially movable relative to the other into its working position of restricted fiow by water admitted to said chamber, and is automatically returnable to its normal position of unrestricted flow; and a valve controlled water supply connection with said chamber.

5. In Ventilating apparatus the combinationof an aspirator casing provided with a mixing tube or passage and having an air outlet connection and a common air inlet and Water outlet connection communicating with opposite ends of said mixing tube, and a Water sealed outlet between the air inlet and the air outlet compartments of the casing, a Water chamber having a Jet oriiice in alineinent With said mixing tube, and a spreader, one of Which is rnovable axially relative to the other into Working position by Water admitted to said chamber, and a valve controlled Water supply connection with said chamber.

6. ln Ventilating apparatus, a casing having an air entraining passage, an air inlet, an air outlet, a Water jet directed length- Wise of said passage toward said outlet, and a Water sealed discharge connection opening from said casing below said air outlet.

7. ln Ventilating apparatus, a casing hav ing an air entraining passage, an air inlet,

an air outlet, a Water jet directed lengthwise of said passage toward said outlet, and a self-draining Water sealed discharge connection opening from said casing below said air outlet.

8. ln Ventilating apparatus the combination of an air entraining passage having an air inlet and an outlet, a jet orifice directed lengthwise of said passage toward its outlet, a liquid supply connection communicating With said orifice, and a inovably mounted spreader extending into said oriiice and adapted to be centered therein by the flow of liquid therethrough.

ln Witness whereof I hereto aiiX my signature in presence of tWo Witnesses.

CHARLES E. SI-IADALL.

Witnesses CHAs. L. Gross, CATHRIEN Snenns.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, C. 

